It worked for Mohammed.
Such people are antiChrists because they lead the flock astray from the JudeoChristian Bible.
It was said by a certain author that the biggest, and first losers of Islam are the believers themselves. And, if you know Islam even a little, the five pillars of the Islamic faith are laid out to defeat each other. And many do not give complete accountance of "how to" leaving their believers to make things up. I'm glad Christ didn't leave us hanging!